The CAS Registry Mumber 76373-13-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,3,7 and 3 respectively; the second part has 2 digits, 1 and 3 respectively. Calculate Digit Verification of CAS Registry Number 76373-13: (7*7)+(6*6)+(5*3)+(4*7)+(3*3)+(2*1)+(1*3)=142 142 % 10 = 2 So 76373-13-2 is a valid CAS Registry Number.
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